Abstract
This paper presents a feed-forward torque control (FTC) technique for interior permanent magnet (IPM) brushless AC (BLAC) drives in traction applications. It is shown that by adopting the Newton-Raphson iterative method for solving the proposed high-order nonlinear relationship between the torque demand, flux-linkage and desirable dq-axis currents, FTC with due account of nonlinear machine parameters can be achieved for IPM BLAC drives. It is also proven that the comparison between the reference voltage magnitudes under maximum torque per ampere (MTPA) and field-weakening (FW) operations together with online base speed determination can be utilized for FW operation activation to achieve full exploitation of the available DC-link voltage during the transition between the constant torque and FW operation regions. Since both the dq-axis current references and the base speed for FW operation activation are computed online, the proposed FTC technique provides flexibility for online parameter update or estimation and is able to cope with wide DC-link voltage variation. The proposed FTC strategy is experimentally validated by measurements on a 10kW wide constant power speed range (CPSR) IPM BLAC machine drive.
Original language | English |
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Title of host publication | Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013 |
Publisher | IEEE |
Pages | 152-159 |
Number of pages | 8 |
ISBN (Electronic) | 9781467349741, 9781467349734, 9781467349727 |
ISBN (Print) | 9781467349758 |
DOIs | |
Publication status | Published - 15 Jul 2013 |
Externally published | Yes |
Event | 2013 IEEE International Electric Machines and Drives Conference - Chicago, United States Duration: 12 May 2013 → 15 May 2013 |
Conference
Conference | 2013 IEEE International Electric Machines and Drives Conference |
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Abbreviated title | IEMDC 2013 |
Country/Territory | United States |
City | Chicago |
Period | 12/05/13 → 15/05/13 |